import sys
print(type(sys),sys.__package__)
print(type(sys.stdin))

temp = open('inputs','w')
temp.write('12\n34\n')
temp.close()

sys.stdin = open('inputs','r')
a = input('pls input a\n')
b = input('pls input b\n')
print(a,'+',b, '=', int(a)+int(b))
